⬆️ deps: Update dependency pytest to v7 (#2)

Co-authored-by: Renovate Bot <bot@renovateapp.com>

Author: renovate[bot]

poetry.lock

@@ -9,7 +9,7 @@ build = "build.py"
 python = "^3.8"
 
 [tool.poetry.dev-dependencies]
-pytest = "^6.2"
+pytest = "^7.0"
 black = "^21.11b1"
 Cython = "^0.29.25"